diff options
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/edma.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index 2966ef0..9500720 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -158,13 +158,18 @@ static void edma_execute(struct edma_chan *echan) /* Link to the previous slot if not the last set */ if (i != (nslots - 1)) edma_link(echan->slot[i], echan->slot[i+1]); - /* Final pset links to the dummy pset */ - else - edma_link(echan->slot[i], echan->ecc->dummy_slot); } edesc->processed += nslots; + /* + * If this is either the last set in a set of SG-list transactions + * then setup a link to the dummy slot, this results in all future + * events being absorbed and that's OK because we're done + */ + if (edesc->processed == edesc->pset_nr) + edma_link(echan->slot[nslots-1], echan->ecc->dummy_slot); + edma_resume(echan->ch_num); if (edesc->processed <= MAX_NR_SG) { |